Cyclospora infection in a young woman with human immunodeficiency virus in Hong Kong: a case report.

Background: Cyclospora is an uncommon pathogen. The diagnosis of Cyclospora infection can be difficult because of its scarcity in developed countries, intracellular mode of life, small size of the parasite and its inability to take up routine microscopic stains. However, it is endemic in many countries in Asia, Africa, Central and South America.

Avian influenza A H5N1 virus: a continuous threat to humans.

We report the first case of severe pneumonia due to co-infection with the emerging avian influenza A (H5N1) virus subclade 2.3.2.